LINEAR ELECTRON CHAINS ON THE LIQUID-HELIUM SURFACE - CARRIER TRANSPORT

The unique system - linear electron chains on the liquid helium surfac e was realized experimentally for the first time. The system was reali zed using curvature of the liquid helium surface film covering a profi led substrate with a small dielectric constant and a pressing electric field holding electrons in the liquid channels. The conductivity of c arriers in linear electron chains and magnetoresistance of a quasi-one -dimensional system have been measured in the temperature range 0.5 - 1.8 K in holding electric fields zip to 1 kV/cm. The transport propert ies of the system depend on the substrate cleanness. For a clean syste m the electron mobility increases with decreasing temperature, the dat a are in good agreement with the existing theory which describes trans port properties in a one-dimensional electron system without localizat ion. Charging of substrate leads to the localization process in electr on chains. It has been shown that in the absence of localization magne toresistance of a quasi-one-dimensional system on liquid helium in the region of ripplon scattering increases with increasing magnetic field .